The Initiating Factors of Myopia Among Primary and Secondary School Students in Tianjin

Recruiting

• Conditions: Myopia; Refractive Error
• Interventions: Other: No intervention

• Registration Number: NCT05637827
• Lead Sponsor: Tianjin Eye Hospital

Brief Summary

There was a prospective cohort observational study. Forty hyperopic children, 40 myopic children and 120 emmetropia children were randomly selected from grade 1 to grade 3, and were followed up every six months for 3 years. All patients received cycloplegic refraction examination, ocular biological test, binocular visual function test and a questionnaire related to daily eye habits. A multi-level and multi-dimensional data analysis model was constructed to explore the possible factors affecting the occurrence and development of myopia in children.

Detailed Description

Not available

Study Timeline

• Study Start: 2021-11-01
• Status Verified: 2022-11
• Study First Submitted: 2022-11-26
• Study First Submitted QC: 2022-11-26
• Last Update Submitted: 2022-11-26
• Study First Posted: 2022-12-05
• Last Update Posted: 2022-12-05
• Primary Completion: 2024-12-31
• Study Completion: 2024-12-31

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 200

Inclusion Criteria

• students in grades 1-3
• Can cooperate with the examination of students

Exclusion Criteria

• Obvious strabismus and amblyopia
• Eye diseases that affect vision, such as congenital cataracts, glaucoma, and retinal diseases
• History of ocular surgery

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
children with hyperopia	No intervention	The refractive error and axial length of eye were observed
children with myopia	No intervention	The refractive error and axial length of eye were observed
children with emmetropia	No intervention	The refractive error and axial length of eye were observed

Primary Outcome Measures

Name	Time	Method
The changes of refractive error	Every 6 months for a period 3 years	The changes of refractive error between visit time in every 6 months
The changes of axial length	Every 6 months for a period 3 years	The changes of axial length between visit time in every 6 months.

Trial Locations

Locations (1)

Tianjin Eye Hospital; 🇨🇳 Tianjin, Tianjin, China